Unexpected entry BDTWeek in Rinex3 for IRNSS/Navic (nav3.py)

[nifx]

Evaluating an IRNSS/Navic Rinex 3 file returns a data list with entries including BDTweek (see nav3.py).

The current georinex implementation (nav3.py) looks like:

GPSWeek for sv_sys == 'G'
BDTWeek for sv_sys == 'C'
GPSWeek for sv_sys == 'J' -> this seems reasonable because of very similar time scale -> but formally wrong as QZSS has own timescale QZSST (change to something like QZSWeek ?)
GALWeek for sv_sys == 'E'
BDTWeek for sv_sys == 'I' -> should be something else, e.g. IRNWeek or NAVweek or similar

I would recommend to adjust the naming to be more accurate.